Home / 21,371.64-29,490.12-11,940.60

Finding the Fourth Proportional to 21,371.64, 29,490.12 and 11,940.60

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Solution

The fourth proportional to 21,371.64, 29,490.12 and 11,940.60 is: 16,476.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.64 : 29,490.12 = 11,940.60 : x
  2. Step 2: Convert to fraction form
    21,371.64/29,490.12 = 11,940.60/x
  3. Step 3: Cross multiply
    21,371.64x = 29,490.12 × 11,940.60
  4. Step 4: Simplify right side
    21,371.64x = 352,129,726.87
  5. Step 5: Solve for x
    x = 352,129,726.87/21,371.64
  6. Step 6: Final answer
    x = 16,476.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.